Programming the Control
Signal Terminals
01/02 AWB8230-1413GB
72
Analog input changeover (AT)
When the digital input configured as AT is active, you can change
over between analog inputs O and OI or between O and O2:
• O: 0 to +10 V,
• O2: –10 V to +10 V,
• OI: 4 to 20 mA.
Under PNU A001, enter the setpoint frequency input method. At
the default value of 01, terminals O, O2 and OI are used for
setpoint input.
X
If it has not yet been correctly configured, set the PNU A001 to
01.
Under A005, specify whether activation of the AT input results in
a changeover between O and OI or between O and O2.
X
Program one of the digital inputs 1 to 5 as AT by entering the
value 16 under the corresponding PNU (C001 to C005).
By default, AT is assigned to digital input 2.
The table below shows how you can link analog inputs O, O2 and
OI with PNU A005 and A006.
Figure 58:
Digital input 5 configured as AT (setpoint definition
through current signal)
AT
P24
5
PNU
Name
Adjustable in RUN mode
Value
Function
WE
Normal
Extended
A005
AT selection
–
–
00
Changing over from O to OI
00
01
Changing over from O to O2
A006
O2 selection
–
–
00
O2 signal only
00
01
Sum of signals at O2 and O/OI
without
direction reversal
02
Sum of signals at O2/O or OI
with
direction reversal
Main frequency
setpoint value
input
Input O2 as additive setpoint
frequency input?
Reversal with
O2?
Input AT
present?
A006
A005
Input AT
O
Yes
Yes
Yes
02
00
Off
01
No
Yes
01
00
Off
01
No
No
Yes
00
00
Off
00
01
Add O + OI
Yes
Yes
No
00
–
–
02
No
01
O2
No
Yes
Yes
02
01
On
00
No
01
OI
Yes
Yes
Yes
02
00
On
Yes
No
01
No
No
00
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